Take a random camera, usually an expensive dSLR or ideally a "vintage" rangefinder then take photos of any old shit in an urban environment. Random people, beggars, buildings, leaves, garbage - the subject doesn't matter, only that it has zero emotional value and you convert it to high contrast black and white before posting online.

"Aw crap my shutter button stuck down and now my memory card is full of worthless shots of town"